Cotton-Tail and Shrew

Cotton-Tail Rabbit and Shrew have a one-sided friendship. Cotton-Tail loves shrew and thinks he's cute, while Shrew thinks Cotton-Tail is annoying and at many times is scared of her due to the fact that she is always hugging him. But in secret, he is in love with Cotton-tail, but feels frustrated because she is oblivious to it.

In the series, It has been proven that Cotton-Tail returns Shrew's affection.

The reason that Shrew loves Cotton-Tail is because she acts exactly like his mother before a viscous bear ate her, so maybe that could be the reason why he is alone all the time and harbors feeling for her.